Island



- tion.

CHARLES D. WOOD, or GENTRAL' shits, Rectifiers;

" "'CORSET-PRING.

Patented January 5, recs.

SPEGIFICATION forming part of Letters Patent N0. 748,830, dated January 5, 1904. Application filed October 23, 1903 Serial No. 178,296. (No model.)

To all whom it may concern:

Be it known that I, CHARLES D. WOOD, of Central Falls, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Corset- Springs, of which the following is a specifica- This invention has for its object to provide a. corset-spring of superior strength, resilipart of this specification, Figure 1 represents a side elevation of a corset-spring embodying my invention. Fig. 2 represents a section on line 2 2 of Fig. 1 on an enlarged scale. Fig. 3 represents a side view showing a modification. Figs. 4 and 5 represent enlarged sections on lines 4 4 and 5 5 of Fig. 3.

' The same reference characters indicate the same parts in all the figures.

In carrying out my invention I assemble a series of lengths or members a a, of wire, which is preferably composed of steel andis of the quality usually known as pianowire, the length of each member a being substantially equal to the length of the spring to be produced. These mem bers a are placed side by side in contact with each other, their relative arrangement being such that when united,as hereinafter described, they form-a spring whichhas substantially fiat sides and is relatively thin-in other. words, a spring having the same general proportions as an ordinary sheet metal corset-spring. The members thus assembled are treated with a material or composition which forms a coating or film b, adhering closely to the surfaces of the wires and uniting the wires firmly together without materially increasing the width or thickness of the spring as a whole. The said binding material may be solder, ap-

- plied to the assembled wires in such manner as to fill or partially fill the grooves formed i by the meeting surfaces'of the wires, the

coating being preferably so thin that the shape of the wires will show through it, giving the sides of the spring a corrugated appearance. I prefer to extend the said coating over the entire surface of the series of members-that is to say, from end to end and entire across the same. The wires thus united collectively form an extremely strong, resilient, and durable spring which is in point of strength and resilience much superior to an-ordinary sheet-metal spring, owing to the fact that greater strength and a much more effective temper can he imparted to a piece of steel wire than to the corresponding crossseotional area of a piece of sheet metal. Hence by assembling a series of wire members and uniting the same as described I utilize the above-recited advantages of wire over sheet metal and produce a spring which does not necessarily differ in its proportions and genmetal spring.

I do not limit myself to a spring characterized by the fact that the bindingcoating which unites the wires extends the entire length of the spring. In Fig. 3 I shows. modi fication in which the binding-coating is ap eral appearance from the ordinary sheetplied to limited areas orsectiens of the spring,

the Wire members a being bare or exposed at other parts. In Fig. 4 I show across-section of one of the portions of the spring in which the wires are united by the coating 12, while in Fig. 5 I show a section of one of the pertions in which the wires are not united.

While solder is the best material for the binding-coating of which I am at present aware, I do not limit myself thereto, as a thin coating of; celluloid, rubber, or vulcanized fiber may be used with reasonall iy satisfactory results. When solder is used, its surface may be coated with painter other material to prevent the solder from tarnishing white fabrics and to exclude moisture from the wires.

I desire to emphasize the fact that by my method of uniting the wires I avoid objectionable enlargements or protuberances, such as are caused by the bands, clips, and clamps heretofore proposed for unitingwires for corset-springs.

I claim- A corset-spring comprising a series of parallel wire members laid side by side, and a. binding coating or film adhering to and. unit ing the wires.

In testimony whereof I have afixed my signature in presence of two witnesses.

CHARLES D. WOOD.

Witnesses:

CHARLES W. ARNOLD, BOSOOE M. DEXTER. 

